Убрана английская половина. Установка для Windows PowerShell, OpenCode Desktop на всех ОС, WSL vs native, ключ для GUI.
CLI and Desktop share %USERPROFILE%\.config\opencode. Persist the API key in .arka-api-key so GUI apps do not need a login-shell export.
arka/public is the dump for all Arka downloads. Keep a root stub so the old installer URL still works. Document in-OpenCode bash install.